/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-8.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 08:19:22,429 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 08:19:22,507 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-03 08:19:22,511 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 08:19:22,512 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 08:19:22,539 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 08:19:22,540 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 08:19:22,540 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 08:19:22,541 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 08:19:22,545 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 08:19:22,545 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 08:19:22,546 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 08:19:22,546 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 08:19:22,547 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 08:19:22,547 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 08:19:22,547 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 08:19:22,547 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 08:19:22,548 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 08:19:22,548 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 08:19:22,548 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 08:19:22,548 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 08:19:22,549 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 08:19:22,549 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 08:19:22,549 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 08:19:22,549 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 08:19:22,550 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 08:19:22,550 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 08:19:22,552 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 08:19:22,552 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 08:19:22,553 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 08:19:22,553 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 08:19:22,553 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 08:19:22,553 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 08:19:22,554 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 08:19:22,554 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 08:19:22,554 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 08:19:22,554 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 08:19:22,554 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 08:19:22,555 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 08:19:22,555 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 08:19:22,555 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 08:19:22,556 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 08:19:22,556 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 08:19:22,557 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 08:19:22,557 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-03 08:19:22,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 08:19:22,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 08:19:22,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 08:19:22,870 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 08:19:22,871 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 08:19:22,872 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-8.i [2024-11-03 08:19:24,365 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 08:19:24,612 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 08:19:24,613 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-8.i [2024-11-03 08:19:24,624 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6000a93f6/eca55c53c2d4462e9933466468cdbb37/FLAGb58c2b2fe [2024-11-03 08:19:24,637 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6000a93f6/eca55c53c2d4462e9933466468cdbb37 [2024-11-03 08:19:24,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 08:19:24,641 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 08:19:24,643 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 08:19:24,643 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 08:19:24,648 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 08:19:24,649 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 08:19:24" (1/1) ... [2024-11-03 08:19:24,650 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36215730 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:19:24, skipping insertion in model container [2024-11-03 08:19:24,650 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 08:19:24" (1/1) ... [2024-11-03 08:19:24,694 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 08:19:24,913 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-8.i[915,928] [2024-11-03 08:19:25,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 08:19:25,119 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 08:19:25,129 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-8.i[915,928] [2024-11-03 08:19:25,199 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 08:19:25,220 INFO L204 MainTranslator]: Completed translation [2024-11-03 08:19:25,221 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:19:25 WrapperNode [2024-11-03 08:19:25,221 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 08:19:25,222 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 08:19:25,222 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 08:19:25,223 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 08:19:25,233 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:19:25" (1/1) ... [2024-11-03 08:19:25,259 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:19:25" (1/1) ... [2024-11-03 08:19:25,303 INFO L138 Inliner]: procedures = 27, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 336 [2024-11-03 08:19:25,307 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 08:19:25,308 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 08:19:25,308 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 08:19:25,308 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 08:19:25,318 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:19:25" (1/1) ... [2024-11-03 08:19:25,319 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:19:25" (1/1) ... [2024-11-03 08:19:25,325 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:19:25" (1/1) ... [2024-11-03 08:19:25,376 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-03 08:19:25,376 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:19:25" (1/1) ... [2024-11-03 08:19:25,377 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:19:25" (1/1) ... [2024-11-03 08:19:25,406 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:19:25" (1/1) ... [2024-11-03 08:19:25,417 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:19:25" (1/1) ... [2024-11-03 08:19:25,426 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:19:25" (1/1) ... [2024-11-03 08:19:25,430 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:19:25" (1/1) ... [2024-11-03 08:19:25,436 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 08:19:25,437 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 08:19:25,438 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 08:19:25,438 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 08:19:25,438 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:19:25" (1/1) ... [2024-11-03 08:19:25,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 08:19:25,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 08:19:25,483 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-03 08:19:25,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-03 08:19:25,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 08:19:25,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 08:19:25,518 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 08:19:25,518 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 08:19:25,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 08:19:25,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 08:19:25,641 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 08:19:25,642 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 08:19:31,198 INFO L? ?]: Removed 44 outVars from TransFormulas that were not future-live. [2024-11-03 08:19:31,198 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 08:19:31,223 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 08:19:31,223 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 08:19:31,224 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 08:19:31 BoogieIcfgContainer [2024-11-03 08:19:31,224 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 08:19:31,230 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 08:19:31,230 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 08:19:31,233 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 08:19:31,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 08:19:24" (1/3) ... [2024-11-03 08:19:31,235 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12640fef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 08:19:31, skipping insertion in model container [2024-11-03 08:19:31,235 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:19:25" (2/3) ... [2024-11-03 08:19:31,236 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12640fef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 08:19:31, skipping insertion in model container [2024-11-03 08:19:31,236 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 08:19:31" (3/3) ... [2024-11-03 08:19:31,237 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-8.i [2024-11-03 08:19:31,254 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 08:19:31,255 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 08:19:31,322 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 08:19:31,328 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2c97c232, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 08:19:31,329 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 08:19:31,333 INFO L276 IsEmpty]: Start isEmpty. Operand has 154 states, 101 states have (on average 1.5148514851485149) internal successors, (153), 102 states have internal predecessors, (153), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-03 08:19:31,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2024-11-03 08:19:31,361 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 08:19:31,363 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 08:19:31,363 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 08:19:31,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 08:19:31,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1272070780, now seen corresponding path program 1 times [2024-11-03 08:19:31,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 08:19:31,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620772127] [2024-11-03 08:19:31,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 08:19:31,380 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-03 08:19:31,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-03 08:19:31,384 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-03 08:19:31,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-03 08:19:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 08:19:31,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 08:19:32,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 08:19:32,078 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 4802 trivial. 0 not checked. [2024-11-03 08:19:32,078 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 08:19:33,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 4802 trivial. 0 not checked. [2024-11-03 08:19:33,026 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 08:19:33,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620772127] [2024-11-03 08:19:33,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [620772127] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 08:19:33,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 08:19:33,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-03 08:19:33,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494092672] [2024-11-03 08:19:33,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 08:19:33,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 08:19:33,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 08:19:33,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 08:19:33,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 08:19:33,061 INFO L87 Difference]: Start difference. First operand has 154 states, 101 states have (on average 1.5148514851485149) internal successors, (153), 102 states have internal predecessors, (153), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-03 08:19:33,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 08:19:33,103 INFO L93 Difference]: Finished difference Result 301 states and 550 transitions. [2024-11-03 08:19:33,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 08:19:33,106 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) Word has length 322 [2024-11-03 08:19:33,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 08:19:33,115 INFO L225 Difference]: With dead ends: 301 [2024-11-03 08:19:33,116 INFO L226 Difference]: Without dead ends: 150 [2024-11-03 08:19:33,121 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 642 GetRequests, 642 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 08:19:33,124 INFO L432 NwaCegarLoop]: 246 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 08:19:33,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 08:19:33,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-03 08:19:33,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2024-11-03 08:19:33,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 98 states have (on average 1.489795918367347) internal successors, (146), 98 states have internal predecessors, (146), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-03 08:19:33,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 246 transitions. [2024-11-03 08:19:33,182 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 246 transitions. Word has length 322 [2024-11-03 08:19:33,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 08:19:33,183 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 246 transitions. [2024-11-03 08:19:33,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 2 states have call successors, (50) [2024-11-03 08:19:33,183 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 246 transitions. [2024-11-03 08:19:33,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2024-11-03 08:19:33,198 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 08:19:33,198 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 08:19:33,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-11-03 08:19:33,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-03 08:19:33,400 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 08:19:33,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 08:19:33,401 INFO L85 PathProgramCache]: Analyzing trace with hash 963929796, now seen corresponding path program 1 times [2024-11-03 08:19:33,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 08:19:33,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211992319] [2024-11-03 08:19:33,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 08:19:33,402 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-03 08:19:33,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-03 08:19:33,406 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-03 08:19:33,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-03 08:19:33,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 08:19:33,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 08:19:33,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 08:19:34,023 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-03 08:19:34,024 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 08:19:35,071 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-03 08:19:35,071 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 08:19:35,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211992319] [2024-11-03 08:19:35,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [211992319] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 08:19:35,072 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 08:19:35,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 08:19:35,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363269656] [2024-11-03 08:19:35,073 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 08:19:35,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 08:19:35,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 08:19:35,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 08:19:35,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 08:19:35,079 INFO L87 Difference]: Start difference. First operand 150 states and 246 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-03 08:19:39,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 08:19:41,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 08:19:41,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 08:19:41,747 INFO L93 Difference]: Finished difference Result 431 states and 706 transitions. [2024-11-03 08:19:41,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 08:19:41,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 322 [2024-11-03 08:19:41,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 08:19:41,753 INFO L225 Difference]: With dead ends: 431 [2024-11-03 08:19:41,753 INFO L226 Difference]: Without dead ends: 284 [2024-11-03 08:19:41,754 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 642 GetRequests, 641 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 08:19:41,755 INFO L432 NwaCegarLoop]: 427 mSDtfsCounter, 211 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2024-11-03 08:19:41,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 623 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 37 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2024-11-03 08:19:41,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2024-11-03 08:19:41,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 282. [2024-11-03 08:19:41,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 179 states have (on average 1.3966480446927374) internal successors, (250), 179 states have internal predecessors, (250), 100 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-03 08:19:41,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 450 transitions. [2024-11-03 08:19:41,823 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 450 transitions. Word has length 322 [2024-11-03 08:19:41,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 08:19:41,825 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 450 transitions. [2024-11-03 08:19:41,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) [2024-11-03 08:19:41,825 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 450 transitions. [2024-11-03 08:19:41,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2024-11-03 08:19:41,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 08:19:41,833 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 08:19:41,863 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-03 08:19:42,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-03 08:19:42,034 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 08:19:42,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 08:19:42,035 INFO L85 PathProgramCache]: Analyzing trace with hash -215528324, now seen corresponding path program 1 times [2024-11-03 08:19:42,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 08:19:42,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405102089] [2024-11-03 08:19:42,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 08:19:42,036 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-03 08:19:42,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-03 08:19:42,038 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-03 08:19:42,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-03 08:19:42,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 08:19:42,714 INFO L255 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 08:19:42,723 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 08:19:46,587 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-03 08:19:46,588 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 08:19:49,311 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-11-03 08:19:49,311 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 08:19:49,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405102089] [2024-11-03 08:19:49,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1405102089] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 08:19:49,312 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 08:19:49,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 3 [2024-11-03 08:19:49,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085798311] [2024-11-03 08:19:49,312 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 08:19:49,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 08:19:49,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 08:19:49,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 08:19:49,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 08:19:49,316 INFO L87 Difference]: Start difference. First operand 282 states and 450 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2024-11-03 08:19:53,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.60s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 08:19:55,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 08:19:55,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 08:19:55,936 INFO L93 Difference]: Finished difference Result 837 states and 1340 transitions. [2024-11-03 08:19:56,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 08:19:56,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) Word has length 322 [2024-11-03 08:19:56,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 08:19:56,017 INFO L225 Difference]: With dead ends: 837 [2024-11-03 08:19:56,017 INFO L226 Difference]: Without dead ends: 558 [2024-11-03 08:19:56,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 642 GetRequests, 640 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 08:19:56,020 INFO L432 NwaCegarLoop]: 230 mSDtfsCounter, 80 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2024-11-03 08:19:56,021 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 444 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2024-11-03 08:19:56,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2024-11-03 08:19:56,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 546. [2024-11-03 08:19:56,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 341 states have (on average 1.3929618768328447) internal successors, (475), 341 states have internal predecessors, (475), 200 states have call successors, (200), 4 states have call predecessors, (200), 4 states have return successors, (200), 200 states have call predecessors, (200), 200 states have call successors, (200) [2024-11-03 08:19:56,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 875 transitions. [2024-11-03 08:19:56,111 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 875 transitions. Word has length 322 [2024-11-03 08:19:56,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 08:19:56,112 INFO L471 AbstractCegarLoop]: Abstraction has 546 states and 875 transitions. [2024-11-03 08:19:56,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (100), 2 states have call predecessors, (100), 2 states have return successors, (100), 1 states have call predecessors, (100), 1 states have call successors, (100) [2024-11-03 08:19:56,113 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 875 transitions. [2024-11-03 08:19:56,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2024-11-03 08:19:56,117 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 08:19:56,118 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 08:19:56,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-11-03 08:19:56,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-03 08:19:56,320 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 08:19:56,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 08:19:56,320 INFO L85 PathProgramCache]: Analyzing trace with hash 207173502, now seen corresponding path program 1 times [2024-11-03 08:19:56,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 08:19:56,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104301210] [2024-11-03 08:19:56,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 08:19:56,321 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-03 08:19:56,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-03 08:19:56,325 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-03 08:19:56,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-03 08:19:56,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 08:19:56,956 INFO L255 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-03 08:19:56,964 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 08:20:07,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 1985 proven. 210 refuted. 0 times theorem prover too weak. 2705 trivial. 0 not checked. [2024-11-03 08:20:07,234 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 08:20:12,189 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 78 proven. 213 refuted. 0 times theorem prover too weak. 4609 trivial. 0 not checked. [2024-11-03 08:20:12,189 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 08:20:12,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104301210] [2024-11-03 08:20:12,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2104301210] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 08:20:12,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 08:20:12,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2024-11-03 08:20:12,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889528347] [2024-11-03 08:20:12,190 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 08:20:12,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-03 08:20:12,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 08:20:12,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-03 08:20:12,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=129, Unknown=0, NotChecked=0, Total=210 [2024-11-03 08:20:12,193 INFO L87 Difference]: Start difference. First operand 546 states and 875 transitions. Second operand has 15 states, 14 states have (on average 9.714285714285714) internal successors, (136), 13 states have internal predecessors, (136), 5 states have call successors, (100), 4 states have call predecessors, (100), 7 states have return successors, (100), 5 states have call predecessors, (100), 5 states have call successors, (100) [2024-11-03 08:20:19,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.23s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 08:20:23,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.71s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-11-03 08:20:38,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-11-03 08:20:40,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-11-03 08:20:41,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 08:20:41,523 INFO L93 Difference]: Finished difference Result 1372 states and 2173 transitions. [2024-11-03 08:20:41,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-03 08:20:41,525 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 9.714285714285714) internal successors, (136), 13 states have internal predecessors, (136), 5 states have call successors, (100), 4 states have call predecessors, (100), 7 states have return successors, (100), 5 states have call predecessors, (100), 5 states have call successors, (100) Word has length 322 [2024-11-03 08:20:41,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 08:20:41,535 INFO L225 Difference]: With dead ends: 1372 [2024-11-03 08:20:41,536 INFO L226 Difference]: Without dead ends: 829 [2024-11-03 08:20:41,539 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 650 GetRequests, 629 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=187, Invalid=275, Unknown=0, NotChecked=0, Total=462 [2024-11-03 08:20:41,540 INFO L432 NwaCegarLoop]: 170 mSDtfsCounter, 720 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 252 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 1189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.0s IncrementalHoareTripleChecker+Time [2024-11-03 08:20:41,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 947 Invalid, 1189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 935 Invalid, 2 Unknown, 0 Unchecked, 28.0s Time] [2024-11-03 08:20:41,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2024-11-03 08:20:41,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 562. [2024-11-03 08:20:41,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 353 states have (on average 1.3711048158640227) internal successors, (484), 353 states have internal predecessors, (484), 200 states have call successors, (200), 8 states have call predecessors, (200), 8 states have return successors, (200), 200 states have call predecessors, (200), 200 states have call successors, (200) [2024-11-03 08:20:41,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 884 transitions. [2024-11-03 08:20:41,619 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 884 transitions. Word has length 322 [2024-11-03 08:20:41,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 08:20:41,620 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 884 transitions. [2024-11-03 08:20:41,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 9.714285714285714) internal successors, (136), 13 states have internal predecessors, (136), 5 states have call successors, (100), 4 states have call predecessors, (100), 7 states have return successors, (100), 5 states have call predecessors, (100), 5 states have call successors, (100) [2024-11-03 08:20:41,620 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 884 transitions. [2024-11-03 08:20:41,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2024-11-03 08:20:41,622 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 08:20:41,622 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 08:20:41,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-11-03 08:20:41,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-03 08:20:41,823 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 08:20:41,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 08:20:41,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1786971204, now seen corresponding path program 1 times [2024-11-03 08:20:41,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 08:20:41,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092095411] [2024-11-03 08:20:41,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 08:20:41,824 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-03 08:20:41,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-03 08:20:41,826 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-03 08:20:41,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-03 08:20:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 08:20:42,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-03 08:20:42,349 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 08:20:47,143 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 2443 proven. 84 refuted. 0 times theorem prover too weak. 2373 trivial. 0 not checked. [2024-11-03 08:20:47,143 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 08:20:53,233 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 63 proven. 84 refuted. 0 times theorem prover too weak. 4753 trivial. 0 not checked. [2024-11-03 08:20:53,234 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 08:20:53,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092095411] [2024-11-03 08:20:53,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2092095411] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 08:20:53,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 08:20:53,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2024-11-03 08:20:53,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666456491] [2024-11-03 08:20:53,235 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 08:20:53,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-03 08:20:53,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 08:20:53,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-03 08:20:53,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-03 08:20:53,237 INFO L87 Difference]: Start difference. First operand 562 states and 884 transitions. Second operand has 14 states, 14 states have (on average 9.857142857142858) internal successors, (138), 14 states have internal predecessors, (138), 4 states have call successors, (100), 3 states have call predecessors, (100), 5 states have return successors, (100), 4 states have call predecessors, (100), 4 states have call successors, (100)